Negative FX was a hardcore band from Boston, formed in 1981. Though the band lasted only a short time, playing a total of five shows (six flyers exist), the band was well known for their involvement in the local straight edge scene of the early 1980s. Along with members of the bands DYS and SS Decontrol (SSD), Negative FX was part of the "Boston Crew", a group of social friends who traveled around the country with SSD and other Boston hardcore bands.